| Date | Acquired | Amount |
|---|---|---|
| Feb 13, 2017 |
|
$ 2,470,000,000 |
| Jan 09, 2017 |
|
Undisclosed amount |
| Dec 20, 2016 |
|
$ 2,900,000,000 |
| Nov 22, 2016 |
|
$ 125,000,000 |
| Oct 27, 2016 |
|
$ 200,000,000 |
| Sep 20, 2016 |
|
Undisclosed amount |
| Sep 20, 2016 |
|
$ 1,700,000,000 |
| Sep 14, 2016 |
|
$ 639,000,000 |
| Sep 06, 2016 |
|
$ 60,000,000 |
| Aug 11, 2016 |
|
$ 95,000,000 |
| Apr 21, 2016 |
|
$ 85,000,000 |
| Jan 07, 2016 |
|
$ 90,000,000 |
| Nov 05, 2015 |
|
Undisclosed amount |
| Sep 03, 2015 |
|
$ 300,000,000 |
| Jul 27, 2015 |
|
$ 560,000,000 |
| Jul 06, 2015 |
|
$ 125,000,000 |
| Jun 17, 2015 |
|
$ 2,100,000,000 |
| Jan 22, 2013 |
|
$ 958,000,000 |
| Nov 16, 2012 |
|
$ 350,000,000 |
| Jul 19, 2011 |
|
$ 275,000,000 |
| Feb 18, 2010 |
|
Undisclosed amount |
| Sep 19, 2007 |
|
$ 370,000,000 |
| Feb 22, 2007 |
|
$ 97,000,000 |
| Mar 23, 2006 |
|
Undisclosed amount |
| Nov 20, 2003 |
|
$ 230,000,000 |
